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The Taub Faculty of Computer Science Events and Talks

PB-FS: Postcard Based Fast Start
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Dan Aaronson (M.Sc. Thesis Seminar)
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Monday, 07.08.2023, 12:30
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Zoom Lecture: 95365724708
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Advisor: Prof. R. Cohen
We propose PB-FS (Postcard-Based Fast Start), a rate initialization scheme that uses direct feedback from the switches to quickly correct the rates of new datacenter flows that begin at the line rate and cause congestion. PB-FS is designed to easily integrate into any datacenter congestion control protocol. We evaluate PB-FS in two datacenter environments: a lossless network that runs RoCE, and a lossy network that uses RDMA with selective repeat. We show that PB-FS significantly reduces tail latency of short flows while maintaining throughput, in both lossless and lossy datacenters.